So I have an appointment to get my windows tinted at bmw tomorrow. The cost, $400. This seems to be insanely expensive for tinting but I figure if it bubbles up or something theyll stand by there work and do it over. What do you guys think. Take it to them or some other shop that will cost half the price. I'm thinking if I do it somewhere else and I have a problem with my windows rolling up or down one day, theyll blame it on the tint not being done by them. Therefore voiding the warranty on the window.